Washington, DC: This city on the banks of the Potomac River nestled between Virginia and Maryland is the most powerful place in the United States. Washington DC, the nations capital, is home to the top of the US government and home to many of the foreign embassies. DC is also one of the top tourist destinations in the country, visitors come to see government in action and also tour the many museums and monuments that the city has to offer. Click here to read more about Washington DC.